From: Nick Piggin <npiggin@suse.de>
Date: Wed, 22 Mar 2006 08:08:06 +0000 (-0800)
Subject: [PATCH] mm: page_state comment more
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9d41415221214ca4820b9464dfa548e2f20e7dd5;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] mm: page_state comment more

Clarify that preemption needs to be guarded against with the
__xxx_page_state functions.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 8cef69d462f2..9ea629c02a4b 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -86,8 +86,9 @@
  * - The __xxx_page_state variants can be used safely when interrupts are
  * disabled.
  * - The __xxx_page_state variants can be used if the field is only
- * modified from process context, or only modified from interrupt context.
- * In this case, the field should be commented here.
+ * modified from process context and protected from preemption, or only
+ * modified from interrupt context.  In this case, the field should be
+ * commented here.
  */
 struct page_state {
 	unsigned long nr_dirty;		/* Dirty writeable pages */